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CS376 Introduction

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iPhone. There was the Newton ... Source: The Simpsons, Wikipedia ... Case Study: iPhone input. Design distinctions. Tactile Input. Disambiguation of input ... – PowerPoint PPT presentation

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Title: CS376 Introduction


1
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2
Mobile
Scott Klemmer tas Amal dar Aziz, Mike Krieger,
Ranjitha Kumar, Steve Marmon, Neema Moraveji,
Neil Patel
02 October 2008
3
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4
Sony Walkman
5
Car phone
6
3.3 billion mobile phones worldwide
Source Informacon (2007)
7
Mobile design is evolving rapidly!
Newton
Palm Pilot
iPhone
Source Apple, Palm
8
There was the Newton …
Apple Newton MessagePad
Newton screen displaying a Note with text, "ink
text", a sketch, vectorized shapes
Photograph of screen displaying Checklist, some
bullet points checked and/or "collapsed"
The Newton OS GUI
Source The Simpsons, Wikipedia
9
The Newton had problems
  • Design Issues
  • Recognition (relied on it too much, didnt work
    well enough)
  • Physical size (too big)
  • Connectivity (not much)

Hey, Take a memo on your Newton
Beat Up Martin
Baahh!
The Original Apple Newton's handwriting
recognition was made light of in The Simpsons
episode Lisa on Ice
Source The Simpsons, Wikipedia
10
The Palm Pilot improved on them
  • Design Wins
  • Recognition simple graffiti
  • Physical size fits in the front pocket
  • Connectivity easy sync

Jeff Hawkins, Palm What about the Foleo?
Graffiti
Rob Haitani, Palm OS Designs what should be
most prominent based on frequency of use, and
strives to make the most often used interactions
accessible in a single step.
HotSync
Pocket size
Palm OS
Source Palm 1000 Retrospective, Palm V, Rob
Haitani in Moggridge, Designing Interactions.
Ch. 3. From the Desk to the Palm.
http//www.designinginteractions.com/interviews/R
obHaitani
11
Prototyping the Palm
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14
Technology Trends
processing
15
Technology Trends
disk
16
Technology Trends
bandwidth
17
Technology Trends
RAM
18
Technology Trends
Devices on Internet
19
Technology Trends
Imaging Resolution
20
Technology Trends
Display Resolution
21
Technology Trends
Size of pockets
22
Technology Trends
Unaided human abilities
23
What will we do with Mobile?
  • The same applications?
  • Different ones?

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Malaysia
27
Grameen Telecom Village Phone
28
What makes mobile design exciting?
  • Many Design Choices
  • Think different from GUI/Web
  • Swiss army vs. dedicated
  • Pen/speech modalities
  • Integrate with other tasks
  • Social apps
  • Always in your pocket

29
What makes mobile design difficult?
  • Design constraints
  • Limited attention/Interactions bursty
  • Screen size small
  • Form factor
  • Limited network connectivity
  • Speech / pen / multimodal

30
Limited Attention Input Interaction
  • Minimize keystrokes
  • Provide overview detail
  • Understandable interface at a glance
  • Design with tasklets
  • Minimum set of functions

31
Example approach Nokia Navi-Key
Reducing number of buttons
Source Scott Jenson, The Simplicity Shift.
Cambridge University Press, 2002.
32
Mobile Input Lots of Research
33
Disambiguation w/ Dictionary
  • Dictionary based (such as T9, PocketPC)
  • e.g., 2-2-5-3
  • able 2-2-5-3-0
  • cake 2-2-5-3-N-0
  • bald 2-2-5-3-N-N-0
  • calf 2-2-5-3-N-N-N-0
  • Lots of N Next

Source Microsoft, MacKenzie, I. S., Kober, H.,
Smith, D., Jones, T., Skepner, E. (2001).
LetterWise Prefix-based disambiguation for
mobile text input. Proceedings of the ACM
Symposium on User Interface Software and
Technology - UIST 2001, pp. 111-120. New York
ACM.
34
Disambiguation w/ Predictive
  • Predictive (such as BB SureType, Letterwise)
  • e.g., t-h-
  • e A
  • i B
  • o C
  • u D
  • …

Source Microsoft, MacKenzie, I. S., Kober, H.,
Smith, D., Jones, T., Skepner, E. (2001).
LetterWise Prefix-based disambiguation for
mobile text input. Proceedings of the ACM
Symposium on User Interface Software and
Technology - UIST 2001, pp. 111-120. New York
ACM.
35
Comparison between Dictionary and Predictive
                                                
                      Figure 11. Comparison of
entry rates (wpm) with practice for LetterWise,
T9, and Multitap. (Note LetterWise and Multitap
figure are from Figure 6. Simulated T9 figures
are from Figure 10 with 0.85 frequency of words
in dictionary)
Source MacKenzie, I. S., Kober, H., Smith, D.,
Jones, T., Skepner, E. (2001). LetterWise
Prefix-based disambiguation for mobile text
input. Proceedings of the ACM Symposium on User
Interface Software and Technology - UIST 2001,
pp. 111-120. New York ACM.
36
Case Study iPhone input
  • Design distinctions
  • Tactile Input
  • Disambiguation of input
  • Animations

Multi-touch Mac OS X Wireless
Accelerometer Proximity Sensor
Predictive Touch keyboard
Internet Music Phone
Source Apple
37
Typing algorithm
  • Model where a user touched on the screen
  • Model the layout of keys and what keys surround
    the touch
  • If word not in dictionary (or if an extremely
    unlikely word), present alternative
  • While user types, dynamically adjust target sizes
    of keys
  • User can accept by simply tapping Space

38
State of the Art Shapewriter
39
Service Design
40
Eye to the Future Sensor Networks
Live Ad Hoc Sensor Network showing Light
Intensity
A handful of network sensor 'dots'
Lots of 'dots' - getting ready for the big demo
Source UC Berkeley Smart Dust Program, Largest
Tiny Network Yet, http//webs.cs.berkeley.edu/800d
emo/
41
Eye to the Future Mobile Everywhere
  • A 2002 study calculated there were around 4.2
    million CCTV cameras in the UK - one for every 14
    people.
  • "If you go forward 50 years, you are probably
    talking about one million forms of sensor per
    person in the UK," he said.
  • This was a conservative estimate, he said. "More
    aggressive" calculations suggest there could be
    20m sensors per person.

There could be one million sensors per UK
resident by 2057
There could be one million sensors per UK
resident by 2057
Source BBC, Sensor rise powers life recorders
42
Information Appliances
  • Mobile devices with dedicated purpose

43
Mike Kriegers Sections
  • …will be in Gates 100

44
Further Reading
  • Studio 7.5, Designing for Small Screens
  • Mizuko Ito, Personal, Portable, Pedestrian
  • Rich Ling, the Mobile Connection
  • Christian Lindholm, Mobile Usability
  • Matt Jones, Mobile Interaction Design
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